Interest rates are rising around the world, inflation is pushing them up, and markets are starting to feel it. Should you worry about your investments, your mortgage, your retirement? Here is what is really happening, without panic and without wishful thinking.

1

Rates are not rising everywhere at the same pace

On September 16, the U.S. Federal Reserve raised its policy rate to 3.75%-4.00%, its first hike since 2023, by a unanimous vote. The European Central Bank (2.50%) and the Bank of Japan (1.25%, a high of more than thirty years) also tightened in September, while the Bank of England held at 3.75%.

The main culprit: energy. Brent crude climbed back above US$100 a barrel because of the conflict with Iran, feeding inflation everywhere.

And in Canada? The Bank of Canada is holding its rate at 2.25%, unchanged since October 2025. But the calm is deceptive. The yield on 10-year Government of Canada bonds is hovering around 3.9%. As of October 9, markets gave roughly a one-in-four chance of a hike on October 28, but a hike by December was widely expected, and economists are divided.

What it changes

Your fixed mortgage rate does not depend on the policy rate but on bond yields, which are themselves driven by global inflation, U.S. Treasuries and oil, three factors the Bank of Canada does not control.

Concrete example

Monique, a federal public servant in Gatineau, must renew her mortgage in a few months. She has $350,000 left to repay over 20 years. At a hypothetical rate of 3%, her payment would be about $1,938 a month; at 4.5%, it would climb to about $2,206, nearly $270 more every month. Actual rates vary by lender, but the order of magnitude shows why it pays to plan a renewal rather than endure it.

2

Inflation is the real engine behind everything else

Central banks are tightening because prices are picking up again. In the United States, the consumer price index reached 3.7% in September, up from 3.4% in August, driven by gasoline (up 9.1% in a single month). More worrying for the Fed: inflation excluding food and energy rose to 2.6%, with a monthly increase of 0.3% rather than the expected 0.2%. For 2026, the Fed projects inflation of 3.7% on its preferred index, or 3.4% excluding food and energy. In Europe, the ECB expects about 3% this year, and the OECD projects 4.1% for the G20 as a whole.

In Canada, the picture is more nuanced. Headline inflation came in at 3.0% in August, or 2.4% excluding gasoline, while the core measures tracked by the Bank of Canada stayed close to the 2% target (1.9% and 2.0%). In other words, the surge comes mostly from energy, not (yet) from broad overheating. The September reading will be published on October 19.

Why it matters

Central banks distinguish "surface" inflation (gasoline, groceries) from "core" inflation (rents, services, wages). An oil shock can pass. An increase that becomes embedded in core prices forces central bankers' hands. That is why a single slightly-too-hot statistic can rattle the stock market.

Concrete example

Pierre, a retiree in Gatineau, spends $1,000 a month on his everyday basket. At 3% inflation a year, that same basket would cost about $1,344 in ten years. If his savings earn less than inflation, his purchasing power erodes even as his balance grows. That is the silent risk the headlines about rates often make us forget.

What it changes

Higher rates protect savers by offering better returns on fixed-income investments, but they penalize borrowers. Checking that your investments beat inflation, and not only that they are "safe", is a good reflex right now.

3

The stock market can digest high rates, but not bad surprises

Higher rates reduce the present value of future profits. Growth companies, especially in technology, are the most sensitive. Yet enthusiasm for AI has kept U.S. indexes near their highs: the S&P 500 closed at 7,811.54 on October 9, despite a 10-year U.S. Treasury yield that reached 5.34% intraday on October 1, its highest level since 2002 (and since 2007 on a closing basis).

Then came the jolt of October 14. After a hotter-than-expected inflation report, the S&P 500 fell 1.11% to 7,718.94 and the Nasdaq 1.88%, their worst sessions since July. The message: the market no longer fears the level of rates so much as the prospect of seeing them rise further.

Why it matters

When a handful of technology giants carry so much weight in an index, your "diversified" portfolio may be less diversified than it looks. Checking your real exposure is more useful than guessing the Fed's next move.

In Canada, the Toronto Stock Exchange, more geared toward energy, banks and resources, reacts differently. On October 9 it posted its biggest gain in five weeks, after the announcement of 68,300 job losses in September eased fears of a rate hike. One more illustration that bad economic news can sometimes cheer markets, and vice versa.

4

AI costs a fortune, and money is no longer free

Big Tech has never invested so much. After the July results, Amazon, Microsoft, Alphabet and Meta plan to spend between US$720 and 745 billion on capital expenditures in 2026, nearly 80% more than in 2025: about $220 billion for Amazon, $195 to 205 billion for Alphabet, $130 to 145 billion for Meta and $175 billion for Microsoft (a figure lowered by an accounting change, since its underlying plan of about $190 billion remains).

High rates complicate this race in three ways. Financing costs more. The revenues from these projects arrive far in the future, so they are worth less today. And the margin for error shrinks. UBS estimates that Amazon, Alphabet and Microsoft will devote about 102% of their cloud revenues to investments in 2026. In the second quarter, Alphabet invested more ($44.9 billion) and has raised nearly $70 billion in shares and bonds this year.

The link runs both ways: these massive bond issues themselves push yields higher, according to several analysts. The strongest will pull through. The more indebted links suffer first. On October 14, Oracle lost 8.8%, Dell 11.3% and CoreWeave 15.5%, as fears surfaced about the rise in its bond yields.

How to keep watch

The giants' quarterly results, expected in the coming weeks, will tell whether AI revenues justify the billions invested. That is the next test.

5

Is the economy slowing? A nuanced picture, from Canada to the rest of the world

In the United States, the Fed sees unemployment stable around 4.1% and the OECD projects growth of 2.2% in 2026. But a prolonged rise in yields eventually weighs: according to RSM, a 10-year yield of 5.5% would bring U.S. growth down to 1.5% and push unemployment up to 4.7%.

In Canada, the signals are contradictory. Second-quarter GDP grew 3.3% at an annualized pace, but employment fell by 68,300 positions in September and unemployment rose to 6.5%. In its July forecast, the Bank of Canada saw growth of 0.7% for 2026 and 1.8% in 2027, and it will publish new projections on October 28. The OECD, for its part, cut its Canadian forecast to 0.9% for 2026 and 1.3% for 2027 because of new U.S. tariffs.

Internationally, the strains are more visible. In Europe, the yield on 10-year French bonds reached nearly 4.95%, its highest since 2002, reviving fears of contagion. In Japan, the weak yen is feeding imported inflation and pushing the central bank to tighten. One positive note: the OECD slightly raised its global growth forecast for 2026, to 2.9%, with AI investment among the supports.

So, what should you do?

No panic, but no indifference either. Four healthy reflexes:

  • Plan your mortgage and loan renewals ahead of time rather than waiting until the last minute.
  • Review your diversification: are you really exposed to anything other than the same technology giants?
  • Look at the bond side: higher yields finally make fixed income attractive.
  • Keep your horizon in mind: short-term decisions based on headlines often cost more than the headlines themselves.

If you are a federal public servant or a worker in the Outaouais, with a pension plan, a mortgage and perhaps investments on both sides of the river, a conversation with your advisor can put all of this in perspective. Every situation is different.

This article is provided for information purposes only and does not constitute personalized advice. Market data is current as of October 15, 2026 and can change quickly.

Sources

Consulted on October 15, 2026.

  • Central banks and rates: Federal Reserve (press conference and minutes of September 16); Bank of Canada (Monetary Policy Report, July 2026); Reuters and Wealth Professional (hike probabilities as of October 9); Investing.com (Canadian yields); Insight Financial Associates and XPS Group (ECB, Bank of Japan, Bank of England, Brent).
  • Inflation: Bureau of Labor Statistics (September 2026 CPI); Statistics Canada (August 2026 CPI); OECD (Interim Economic Outlook, September 23, 2026).
  • Markets: CNBC, CNN and Bloomberg (October 14 sessions, U.S. Treasury yields); T. Rowe Price (October 9 close); Zonebourse (TSX).
  • AI investments: Alphabet (press release and Form 10-Q, Q2 2026); Meta (Q2 press release); CNBC (Amazon, July 30); PYMNTS and CFO Dive (Microsoft, July 29); Forbes (2025 base); Yahoo Finance (UBS estimate).
  • Canadian and global economy: Desjardins (Q2 GDP, August 28); Kuwait Times/AFP (OECD Canadian forecast); Wealth Professional (RSM scenario); Yahoo Finance (Japan, yen).
  • Author's calculations: Monique's example (20-year amortization, semi-annual compounding, hypothetical rates) and Pierre's (3% inflation over 10 years).